Edelweiss Marine Radio EQ1 DYN User Manual

digital audio  
weiss engineering ltd.  
Florastrasse 42, 8610 Uster, Switzerland  
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GAMBIT  
EQ1-DYN  
OPERATING MANUAL  
Software Version:  
0S: 1.1  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
FRONT PANEL  
FRONT PANEL  
Ž
Œ
Graph 1: Front Panel Elements  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
FRONT PANEL  
Front Panel Groups  
The front panel of the EQ1 offers several control and display features. These can be grouped according to  
Graph 1: Front Panel Elements:  
Œ - Band Parameters  
- Menu  
Ž - Controls  
- Snapshots  
This manual will explain how to operate the EQ1 according to these groups.  
The Bypass key is discussed separately in chapter EQ Bypass (p. 14). The “gain/ data” encoder appears  
throughout the rest of this manual and is therefore not explained separately.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
INTRODUCTION  
INTRODUCTION  
Congratulations on purchasing the Weiss Gambit Series EQ1-DYN Digital Equalizer !  
The EQ1-DYN is a dynamically controlled equal-  
izer. It has four dynamic bands and three linear  
Display  
bands per channel, each operating at 88.2 or 96  
Double logarithmic graph of the magnitude  
kHz, depending on input sampling frequency  
function of the equalizer calculated in real  
(88.2kHz processing with 44.1kHz and 88.2kHz  
time  
inputs, 96kHz processing with 48kHz and 96kHz  
Status display showing sampling frequency,  
channel status data handling, current work-  
space and snapshot number and a resetable  
peak-hold and over-hold per channel  
inputs).  
A dynamic band operates similar to a compressor,  
with two additional features:  
Band display (activated by touch) showing  
boost, Q/ slope and frequency settings for  
each band  
1. The band is sensitive to signal level in its fre-  
quency range only. There is no cross-  
modulation from other bands. Some com-  
pressors (like the Weiss 102 Compressor)  
also have this feature, called “sidechain EQ”.  
The exact centre frequency and bandwidth of  
the sidechain is dependent on the centre fre-  
quency and Q setting of the dynamic band.  
Two over-LEDs with settable number of  
consecutive over-samples which cause an  
“over” display combined with an over-hold  
function  
2. The gain is only applied to certain frequen-  
cies, and not across the whole audio band.  
No compressor has this feature.  
Snapshots  
3 x 128 non-volatile snapshots where all  
parameters are stored  
In addition to the dynamic operation of the bands,  
the overall dynamic frequency response is dis-  
played in real-time in the LC display. This is nec-  
essary for the proper setup of the parameters of  
the dynamic band, and it gives direct visual feed-  
back on the operation of the EQ1-DYN, similar  
to gain reduction meters on compressors.  
A-B workspaces for quick comparison be-  
tween two settings  
Remote Control  
Supports MIDI, RS-232 and RS-422 proto-  
cols  
Features of the EQ1-DYN include:  
Standard MIDI Continuous Controllers for  
parameter remote control (including overall  
gain)  
Processing  
Four dynamic peaking filters with threshold  
adjustment.  
Snapshot automatization with MIDI Pro-  
gram Change Commands  
24bit digital input, internal 40bit floating-  
point arithmetic, dithered output for 16bit,  
20bit or 24bit wordlengths.  
MIDI Dump of Snapshots  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
OPERATION  
The following explanations assume that the equalizer is in power-up mode, i.e. no menu is active.  
If a menu is active, press the “menu” key repeatedly until the status display appears.  
Use this value to set the optimal gain for a specific  
session. Reset it for every session.  
Status Display  
Over-Hold  
Key A  
Key B  
Whenever an over is encountered, the boxes to  
the side of the peak-hold values are marked.  
Key C  
Key D  
The functions of the over-LEDs and the over-  
hold both depend on the NUMBER OF  
CONSECUTIVE OVER-SAMPLES setting. To adjust this  
setting, press key B once. Use the “gain/ data”  
encoder to change the value, then press “menu”  
to return to the status display.  
Graph 2: Status Display  
The status display consists of four groups display-  
ing audio signal properties and information about  
the current state of the EQ1. The groups are  
situated adjacent to the softkeys to the right of  
the LCD (Graph 2).  
This setting defines the number of consecutive  
over-samples needed for an over-indication. To  
indicate every over-sample, enter 1. If another  
value is entered, you are still able to detect a sin-  
gle over-sample with the peak-hold function.  
Channel Status Group  
Situated adjacent to key A, displays the following  
information:  
Over-samples are defined as exceeding the  
24bit integer range. A full scale signal  
(0dBFS) will not be treated as over. A signal  
that triggered an over in a previous pro-  
cessor in the audio chain will therefore not  
trigger an over in the EQ1 (unless boosted).  
sampling frequency in kHz: “44.1”, “ 48”,  
“88.2” or “96”  
pre-emphasis: “E” appears if pre-emphasis  
is set (empty if not used)  
input  
output channel status data format:  
“C” for consumer and “P” for professional  
Remote Group  
To change the output channel status data format,  
press key A and select format type or loop  
through.  
Situated adjacent to key C, displays remote con-  
trol protocol (“MIDI”, “RS 232” or “RS 422”),  
channel (“1” - “16”) and status (on/ off, displayed  
with check box).  
Peak Group  
Situated adjacent to key B, this group contains a  
peak-hold and an over-hold for each channel. To  
reset these values press key B twice.  
For remote control set-up see chapter Remote  
Control.  
Peak-Hold  
The numeric peak value is measured relative to  
0dBFS, where 0dB equals digital full scale.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Snapshot Display  
Bottom line in the status display. Refer to this for  
information on current workspace and snapshot.  
There are two workspaces (“A” and “B”) for  
quick comparison of two equalizer settings. A  
workspace can be stored to a snapshot for later  
use.  
The number of the last recalled snapshot will be  
displayed. If you change any value after the recall,  
the “ ” will change to “ ” to symbolize that the  
workspace is not equal to the displayed snapshot  
anymore.  
For snapshot handling see chapter Snapshots.  
Dither Icon  
The dither icon is situated right next to key D  
(see Graph 2). If dither is off, the icon contains  
the number “24“, the word length of the output  
signal in bits. Turning dither on will produce ar-  
rows above and below the new word length  
number (“16“ or “20“). Additionally, if auto-  
blacking is enabled, the bottom right corner of the  
icon is inverted.  
For details on dither refer to chapter Dither.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Band Parameters  
What Is A Band?  
To activate a band and see its detailed parameter  
The EQ1 has seven independent bands per chan-  
nel. A band has the following parameters which  
can be adjusted separately for each band:  
values, touch any knob in a band (see Graph 1, Œ  
). The active band’s parameter values will be  
shown in the band display (see Graph 4) replacing  
the status display, and its LED chain will light up,  
showing you where to adjust the parameter val-  
ues.  
1. Mode  
2. Boost  
3. Q/ Slope / Shape  
4. Frequency  
Mode specifies the filter type. There are five filter  
types (low and high cut, low and high shelving and  
peaking) and a bypass mode. Each band has its  
own five-LED chain to indicate its active mode  
(see  
Graph 4: Band Display  
Depending on the setting of “Auto Switch-  
back From Band To Status Display”, this  
display will hold or disappear again after  
having released the knob.  
Graph 3).  
To change the “Auto Switchback From Band To  
Status Display” setting, press the “menu” key,  
then select “Controls” with key B. The value can  
now be changed with key B.  
High Shelving  
Low Shelving  
Peaking  
High Cut  
Low Cut  
Range  
The parameters’ range is independent of the  
mode and is listed at page 20.  
Graph 3: Mode LEDs  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Adjusting Band Parameters  
Controls  
To adjust boost, Q/ slope or frequency simply  
turn the corresponding knob (see Table 1).  
See Graph 1: Front Panel Elements, Ž.  
“boost”  
set boost  
set boost  
set boost  
-
“Q/ slope”  
set Q  
frequency”  
set centre frequency  
set centre frequency  
set 3dB frequency  
set -3dB frequency  
Peaking-Filter  
Dynamic-Peaking  
Shelve-Filter  
Cut-Filter  
set Q / threshold  
set shape  
set slope  
Table 1  
To adjust the mode, activate the band. Press a  
key (Table 2) to change the mode value. The ac-  
tive mode is highlighted and the adjacent softkey  
is lit.  
CH1 & CH2  
These two keys patch the band controls to the  
according channels. The band controls can either  
be separate for each channel or ganged together.  
Key A  
Key B  
Key C  
Key D  
toggle lo- / hi-  
shelve  
toggle peaking  
/dynamic peaking  
toggle lo- / hi-cut  
bypass  
Mode  
Table 2  
The key is lit for the active channel.  
If the band bypass is on (highlighted), its filter  
settings (type and parameters) are saved but have  
no effect on the audio signal. Turning bypass off  
will restore the previous band settings.  
To copy CH1 settings to CH2 or vice versa, press  
the “copy” key and select an option (Graph 6).  
Ganged  
Bypassing all bands is sonically equivalent to  
using the overall bypass (refer to EQ Bypass)  
if the gain is set to 0.0dB.  
When this key is lit, the band controls act for both  
channels simultaneously. Switching channels while  
the “ganged” key is lit will activate CH1 and CH2  
settings alternately for both channels.  
If ganged is off, the controls will affect the active  
channel only.  
Only bands 1, 2, 5, and 6 can be set into dynamic  
mode. This allows for linear gain adjustment be-  
fore and after a dynamic band.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Dynamic  
will adjust itself to correct volume imbalances  
between the two instruments.  
If a dynamic peaking-filter has been selected,  
pressing the “dynamic” key will toggle the Q-  
controller of the peaking band between Q- and  
Threshold-adjustment (this can also be seen in the  
band display, where either the Q or the threshold  
value is shown).  
De-Essing  
“Ess”-sounds usually occur on, but are not limited  
to, recordings with human vocals. They are the  
product of over-compression (common on TV or  
radio recordings), or similar effects, like satura-  
tion of magnetic mediums.  
How to set a dynamic band  
A good way to start off is by taking some material,  
and setting the EQ1-DYN so as to correct or  
pronounce all the bands which you feel need  
processing. Do the adjustments in normal peaking  
mode, not in dynamic peaking mode. Set every-  
thing so you get the feeling that this improves the  
“sound” of the material.  
These sounds are characterised by an exagger-  
ated hiss or “s”-pronunciation (hence the name).  
They are mostly concentrated in the band be-  
tween 1kHz - 10kHz.. Just applying attenuation by  
EQ in this band will render the recording dull and  
muffled. High frequency content is very important  
for hearing enjoyment, so simply attenuating will  
reduce programme quality. By applying dynamic  
cut EQ, the “ess”-sounds can be reduced, without  
affecting low-level high-frequency content, im-  
proving the quality.  
Now take any band and set it to dynamic peaking  
mode by pressing key B. Adjust the threshold of  
the band until you see movement in the frequency  
response window of the EQ1-DYN (the thresh-  
old setting is important for the function of the  
dynamic EQ, very much like for a compressor).  
This is a good starting point for experiments!  
We give two examples for dynamic band usage:  
Correcting musical instrument volume imbalances  
EQing is the process of changing the spectral  
balance of any audio programme. By EQing, we  
wish to, for example, attenuate or boost a certain  
instrument within a complex piece of music.  
It is clear from our hearing experiences that most  
instruments overlap in their frequency ranges, so  
trying to affect one certain instrument by EQ  
without affecting others is usually impossible. This  
especially becomes a problem if two instruments  
in the same band are not in volume balance, i.e.  
one is too loud and masks the other.  
One remedy for this is to apply either some boost  
or cut EQ in that band (either boost the soft in-  
strument or attenuate the loud one). Except that  
this process affects both instruments. However,  
when using dynamic EQ, the boost is only applied  
if the loud instrument pauses. On the other hand,  
one can apply some dynamic attenuation when-  
ever the loud instrument plays. The dynamic filter  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
and the output to L/R – the eq section can be set  
to either, depending upon which domain one  
wants to eq.  
M/S Mode  
A 2-channel stereo signal can be transformed  
from the L/R (left/right) domain into the M/S  
(mid/side) domain and back without any signal  
degradation.  
Another option is encoding a L/R signal to M/S for  
further M/S processing outside the EQ1-MK2.  
Then the output will have to be set to M/S and  
the input to L/R. Again, the eq section can operate  
in either domain.  
In the M/S domain, the two channels representing  
the stereo signal contain information on the Mid  
(mono) and Side content of the stereo signal.  
To compensate for different non-standardized  
M/S formats, there is a L/R swap option. This, as  
the name implies, will swap the decoded left and  
right channels, and will be used when decoding  
M/S recorded material to L/R.  
Equalizing in the M/S domain can, for example,  
just affect vocals or instruments centred in the  
stereo mix. Or, by boosting the S channel, result  
in frequency dependent stereo-base enhance-  
ment.  
On/Off  
Press the “menu” key, then select the “System ->  
MS coding” option. This opens the “MS Coding  
Setup” menu (see Graphic 5).  
Graphic 5: MS Coding Setup Menu  
The MS mode is activated by toggling the “M/S  
on/off” value with key C. The M/S icon will ap-  
pear in the top left corner of the frequency re-  
sponse window to indicate that M/S mode is ac-  
tive.  
Setup  
Several possible M/S configurations can be acco-  
modated for in the EQ1. This can be achieved  
with the “M/S Setup” option by pressing key D.  
The user is then taken through a procedure to  
specify the setup to be used. The “back” and  
“next” keys help negotiating within the setup pro-  
cedure.  
To eq a standard L/R stereo signal in the M/S  
domain, the input and output sections are speci-  
fied as L/R, while the EQ is set to M/S.  
If one decides to decode a M/S recording, for  
example, the input would have to be set to M/S  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Snapshots  
If the “Preview” option is not marked, the  
snapshots will be recalled as soon as you en-  
ter a new number.  
See Graph 1: Front Panel Elements, .  
Snapshots are copies of the EQ1 parameter set-  
tings. This allows recalling complete set-ups in-  
cluding all filter parameters and controls settings.  
Press the “recall” key to return to the status dis-  
play.  
Snapshots can be recalled from the front panel or  
by remote control (e.g. MIDI Program Change).  
“Recall 0”  
A-B Comparison  
Snapshot 0 is used as a resetting curve. To reset  
the current workspace, press the “recall” key  
then the“ Recall 0” key.  
You can compare two settings by using the two  
workspaces “A” and “B”. To toggle between the  
two press the “A-B” key. Restore a snapshot or  
simply adjust the filters in one workspace, then  
switch to the other to compare.  
Store  
To store the current workspace to a snapshot,  
press the “store” key. With the “gain/ data” en-  
coder enter the snapshot number where you  
want to store the workspace, then press key D.  
Snapshots can be prevented from accidental era-  
sure by marking the “Safe” option.  
To copy workspace “Ato “Bor vice versa,  
press the “copy” key and select an option (Graph  
6).  
A setting can be stored to multiple snapshots.  
Press “To Range” in the “store” menu.  
Graph 6: "copy" menu  
The active workspace is shown in the status dis-  
play.  
Graph 7: Store To Range Menu  
Recall  
Press the adjacent keys to select “Start” and  
“End” snapshot number, use the “gain/ data” en-  
coder to enter a value (Graph 7). Pressing “Exe-  
cute” will store the setting from the displayed  
workspace (“Aor “B”) to all snapshots between  
the Start and End value. A “Safe” snapshot will  
not be overwritten.  
To recall a snapshot press the “recall” key. No-  
tice that the snapshot will be copied into the ac-  
tive workspace. If you do not want to lose  
these settings, switch to the other workspace by  
pressing the “A-B” key.  
Using the “gain/ data” encoder enter the number  
of the snapshot you want to recall. The graph of  
the snapshot will be displayed in preview mode  
(outlined) to facilitate finding a certain setting.  
However, the audio signal is not affected if the  
“Preview” option is marked. Once you have found  
the snapshot, press key D to restore it.  
Backup  
All 128 snapshots can be transferred to another  
non-volatile memory area for later reference.  
There is enough memory for two complete snap-  
shot sets to be backed up.  
Press the “menu” key then choose the “System”  
and then the “Backup” option to arrive at the  
backup display (Graph 8).  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Loading  
To load a snapshot dump from sequencer, simply  
play the dump sequence. The EQ1 will automati-  
cally switch into receive mode and display statis-  
tics about the snapshots its receiving. If the  
transmission was OK and no errors occured, the  
program switches back to normal mode. Upon  
error, you have to manually switch back to nor-  
mal mode.  
Graph 8: Backup Display  
Select “Create 1” to save the current snapshots  
to bank 1. Select “Restore 1” to overwrite the  
current snapshots with bank 1 (ditto for bank 2).  
When playing back the dump sequence, al-  
ways use the same speed as when the se-  
quence was recorded.  
A backup will overwrite “safe” snapshots.  
Reset  
To reinstall the factory snapshots you must press  
the “menu” key then choose the “System” and  
then the “Reset all” option. This will reset the  
current snapshots. The snapshots that have been  
backed up are preserved.  
Dumping  
The settings of all 128 snapshots can be dumped  
to a remote control port to be stored externally.  
Please make sure that you have connected eve-  
rything correctly and that the proper remote  
control port is activated (see chapter Remote  
Control for setup).  
When dumping to a MIDI-sequencer, make sure  
that the sequencer is not sending or receiving data  
other than the snapshot dump.  
Certain sequencers are not capable of hand-  
ling the amount of data output by the EQ1  
and might crash during or after the dump  
process.  
Always save the sequencer settings before  
recording a dump!  
To initiate a dump, press the “menu” key then  
choose the “System” and then the “Dump” op-  
tion. Start the recording process on the se-  
quencer, then press “Transmit”. This releases the  
dump to the sequencer.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
range that suits your curve and press the “menu”  
key again to return to the status display.  
Dither  
The DS1-MK2 v2.0 is able to apply POW-R type  
dither algorithms to avoid distortion when re-  
quantizing from 24bit to 16bit or 20bit output  
word length (see TECHNICAL DATA for dither  
specifications).  
LCD Contrast  
To change the display contrast, press the “menu”  
key, then select “Display”. Adjust contrast with  
the “gain/ data” encoder.  
To toggle dither on/off, press key D twice. To see  
dither status refer to the status display (see  
Fehler! Verweisquelle konnte nicht ge-  
funden werden. p. Fehler! Textmarke  
nicht definiert.).  
EQ Bypass  
The EQ1 can be completely bypassed with the  
green “bypass” key below the mains switch. If the  
“bypass” key is lit, the EQ1 is absolutely trans-  
parent, making the output signal bit equal to the  
input signal.  
Word Length  
To set output word length, press key D and select  
the appropriate wordlength.  
While bypass is active (key is lit), the EQ1 works  
in preview mode. This allows you to change pa-  
rameters without actually affecting the audio sig-  
nal. The frequency curve is drawn outlined over  
the flat bypass curve, so you still get the advantage  
of the graph when modifying parameters.  
Setup  
Press key D then chose the setup menu. This  
leads to the menu where the type of POW-R  
dither can be chosen (see TECHNICAL DATA  
for dither specifications). Also selectable is:  
As soon as bypass is deactivated, the outlined  
curve takes effect.  
Auto-Blacking  
If auto-blacking is activated by marking the “0 IN  
à 0 OUT“ option, dither will be turned off if the  
input signal is zero As soon as the input signal  
changes, dither will be turned on again. This en-  
sures that pauses between programmes are still  
digital zero, even if dither is activated.  
Display Resolution  
The magnitude of the overall frequency response  
of the EQ1 is drawn on the LC display. This im-  
mensely facilitates filter parameter adjustment  
because it takes one look to see what the equal-  
izer is doing instead of having to work it out from  
the parameter values.  
To obtain the maximum benefit from the graph,  
set the vertical display resolution to a range that  
just covers your settings. There are four ranges  
available:  
± 6dB, ± 12dB, ± 18dB, ± 24dB  
To change the display resolution, press the  
“menu” key, then select “Display”. Choose a  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
OPERATION  
Remote Control  
Software Information  
All band parameters as well as control settings can  
be set externally.  
Press the “menu” key, then select the “System ->  
About” option. This displays a screen with all the  
relevant information on your EQ1 and how to  
reach us. Have this page ready when you want to  
report a problem.  
To see remote control status refer to the status  
display.  
Protocol  
To select a remote control protocol, press key C  
from the status display menu. Select either “RS  
232”, “RS 422” or “MIDI”. This will determine  
which port at the rear of the EQ1 is active. The  
other inactive ports will be ignored.  
Self Test  
Press the “menu” key, then select the “System ->  
Selftest” option. This will start a procedure that  
checks the functionality of all input and display  
devices.  
Press the “menu” key to return to the status dis-  
play if you do not want to change remote on/ off  
status.  
When selecting a port other than MIDI you have  
to specify the baud rate. Refer to the remote  
control software manual for correct settings. The  
set baud rate is displayed to ensure proper set-  
up.  
Channel  
To change the remote control channel number,  
press key C (adjacent to the remote control field).  
Use the “gain/ data” encoder to select a value  
between 1 and 16. Press the “menu” key to re-  
turn to the status display.  
The EQ1 does not support poly-mode (listening  
on all channels). Select the same channel on the  
controller software as is set internally, else no  
remote control messages will be received.  
On/ Off  
To enable or disable remote control, press key C  
(adjacent to the remote control field). Press it  
again to toggle the “ON/ OFF”-value.  
While remote control is off, data will still be sent  
to the selected port. Also, the MIDI THRU output  
will always mirror the MIDI IN input data re-  
gardless of “ON/ OFF” or protocol status.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
TECHNICAL DATA  
AES/EBU Input  
Sampling Frequencies:  
Maximum Input Wordlength:  
Channel Status Data:  
Channel Status Bits  
44.1 kHz, 48.0 kHz, 88.2 kHz, 96.0 kHz  
24 Bits  
Input accepts professional or consumer format.  
forwarded to AES/EBU output:  
Connector:  
see table below  
XLR female  
AES/EBU Output  
Sampling Frequencies:  
Output Wordlength:  
Connector:  
44.1 kHz, 48.0 kHz, 88.2 kHz, 96.0 kHz (always the same as the input)  
24 Bits  
XLR male  
AES/EBU Channel Status Data  
The EQ1 allows to convert the incoming Channel Status Data as follows:  
From Consumer to Professional  
From Professional to Consumer  
Transparent mode, i.e. Channel Status Data is fed forward to the output without any conversion (one  
exception, see below)  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
The following tables describe how the Channel Status Data bits are generated in the various con-  
version modes.  
Output selected: Consumer format.  
Input: Consumer format.  
Output:  
Byte 1:  
All bits fed forward (transparent), except for:  
Bits 0..6: 0000000 (category code general)  
Bit 7: 1 (original)  
Input: Professional format.  
Output:  
Byte 0:  
Bit 0: 0 (consumer)  
Bit 1: 0 (audio)  
Bit 2: 1 (copy allowed)  
Bits 3,4: Preemphasis according to input  
Bit 5: 0 (2 channel mode)  
Bits 6,7: 00 (Mode 0)  
Byte 1:  
Byte 2:  
Bits 0..6: 0000000 (category code general)  
Bit 7: 1 (original)  
Bits 0,1,2,3: Sampling Frequency according to input  
Bits 4,5: 00 (accuaracy grade II)  
Bits 6,7: 00  
Bytes 3..23:  
reserved bytes  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Output selected: Professional format.  
Input: Professional format.  
Output: All bits fed forward (transparent), except for:  
Byte 2:  
Bits 0,1,2: 001 (max. sample length= 24bit)  
Bits 3,4,5: 101 (24 bit word length)  
Bits 6,7: 00  
Input: Consumer format.  
Output:  
Byte 0:  
Bit 0: 1 (professional)  
Bit 1: 0 (audio)  
Bits 2,3,4: Preemphasis according to input  
Bit 5: 0 (source fs locked)  
Bits 6,7: Sampling Frequency according to input  
Byte 1:  
Byte 2:  
Bits 0,1,2,3: 0001 (two channel mode)  
Bits 4,5,6,7: 0000 (no user bit encoding)  
Bits 0,1,2: 001 (max. sample length= 24bit)  
Bits 3,4,5: 101 (24 bit word length)  
Bits 6,7: 00  
Bytes 3..12: All bits 0  
Byte 23: CRCC byte  
Output selected: Transparent.  
Input: Any format.  
Output:  
Byte 2:  
All bits fed forward (transparent), except if EQ not bypassed:  
Bits 0,1,2: 001 (max. sample length= 24bit)  
Bits 3,4,5: 101 (24 bit word length)  
Bits 6,7: 00  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Power  
Mains Voltage:  
Fuse rating:  
110 / 220 Volts with voltage selector  
500 mA slow blow  
Power Consumption:  
40VA max  
Overload  
Number of consecutive  
over-samples to cause  
“over” display:  
1..16 settable  
Filters  
The filter topology used in the EQ1 is a very low noise filter structure for a state of the art performance.  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Parameter Table  
Frequencies (in Hertz):  
13.8, 15.4, 17.3, 19.4, 21.8, 24.5, 27.5, 30.9, 34.6, 38.9, 43.7, 49.0, 50.0, 51.9, 55.0, 58.3, 60.0, 61.7,  
65.4, 69.3, 73.4, 77.8, 82.4, 87.3, 92.5, 98.0, 100, 104, 110, 117, 120, 123, 131, 139, 147, 150, 156, 165,  
175, 180, 185, 196, 200, 208, 220, 233, 240, 247, 250, 262, 277, 294, 300, 311, 330, 349, 360, 370, 392,  
415, 440, 466, 494, 523, 554, 587, 622, 659, 698, 740, 784, 831, 880, 932, 988, 1047, 1109, 1175, 1245,  
1319, 1397, 1480, 1568, 1661, 1760, 1865, 1976, 2093, 2217, 2349, 2489, 2637, 2794, 2960, 3136,  
3322, 3520, 3729, 3951, 4186, 4435, 4699, 4978, 5274, 5588, 5920, 6272, 6645, 7040, 7459, 7902,  
8372, 8870, 9397, 9956, 10548, 11175, 11840, 12544, 13290, 14080, 14917, 15804, 16744, 17740,  
18795, 19912, 21096.  
Boost/Cuts, applicable to shelving and peaking filters:  
All numbers in dB:  
-39.0, -36.0, -33.0, -30.0, -27.0, -24.0, -21.0, -18.0, -17.0, -16.0, -15.0, -14.0, -13.0, -12.0, -11.5, -11.0, -  
10.5, -10.0, -9.5, -9.0, -8.5, -8.0, -7.5, -7.0, -6.5, -6.0, -5.5, -5.0, -4.8, -4.5, -4.3, -4.0, -3.8, -3.5, -3.3, -  
3.0, -2.9, -2.8, -2.7, -2.6, -2.5, -2.4, -2.3, -2.2, -2.1, -2.0, -1.9, -1.8, -1.7, -1.6, -1.5, -1.4, -1.3, -1.2, -1.1, -  
1.0, -0.9, -0.8, -0.7, -0.6, -0.5, -0.4, -0.3, -0.2, -0.1, 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9. 1.0, 1.1,  
1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9. 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.3, 3.5, 3.8, 4.0, 4.3,  
4.5, 4.8, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, 12.5, 13.0, 13.5, 14.0,  
14.5, 15.0, 15.5, 16.0, 17.0, 18.0.  
Q, applicable to peaking filters:  
0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, 0.95, 1.00, 1.05,  
1.10, 1.15, 1.20, 1.25, 1.30, 1.35, 1.40, 1.45, 1.50, 1.55, 1.60, 1.65, 1.70, 1.75, 1.80, 1.85, 1.90, 1.95,  
2.00, 2.10, 2.20, 2.30, 2.40, 2.50, 2.60, 2.70, 2.80, 2.90, 3.00, 3.10, 3.20, 3.30, 3.40, 3.50, 3.60, 3.70,  
3.80, 3.90, 4.00, 4.10, 4.20, 4.30, 4.40, 4.50, 4.60, 4.70, 4.80, 4.90, 5.00, 5.50, 6.00, 6.50, 7.00, 7.50,  
8.00, 8.50, 9.00, 9.50, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 22.0, 24.0, 26.0,  
28.0, 30.0, 35.0, 40.0, 45.0, 50.0, 55.0, 60.0, 65.0, 70.0, 75.0, 80.0, 85.0, 90.0, 95.0, 100, 110, 120, 130,  
140, 150, 160, 170, 180, 190, 200, 220, 240, 260, 280, 300, 350, 400, 450, 500, 550, 600, 650  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Shape, applicable to shelving filters:  
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,  
32, 33, 34, 35, 36, 37, 38, 39, 40 ,41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,  
60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87,  
88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111,  
112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128  
Threshold, applicable to dynamic peaking filters:  
All numbers in dB:  
0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23, -24, -  
25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35, -36, -37, -38, -39, -40, -41, -42, -43, -44, -45, -46, -47,  
-48, -49, -50, -51, -52, -53, -54, -55, -56, -57, -58, -59, -60  
Slope, applicable to cut filters:  
0dB/octave, 6dB/ octave, 12dB/ octave  
Overall Gain:  
All numbers in dB:  
- , -92.0, -89.0, -86.0, -83.0, -80.0, -77.0, -74.0, -71.0, -68.0, -65.0, -62.0, -59.0, -56.0, -53.0, -50.0, -  
48.0, -46.0, -44.0, -42.0, -40.0, -39.0, -38.0, -37.0, -36.0, -35.0, -34.0, -33.0, -32.0, -30.0, -29.5, -29.0, -  
28.5, -28.0, -27.5, -27.0, -26.5, -26.0, -25.5, -25.0, -24.5, -24.0, -23.5, -23.0, -22.5, -22.0, -21.5, -21.0, -  
20.5, -20.0, -19.5, -19.0, -18.5, -18.0, -17.5, -17.0, -16.5, -16.0, -15.5, -15.0, -14.5, -14.0, -13.5, -13.0, -  
12.5, -12.0, -11.5, -11.0, -10.5, -10.0, -9.5, -9.0, -8.5, -8.0, -7.5, -7.0, -6.5, -6.0, -5.8, -5.6, -5.4, -5.2, -  
5.0, -4.8, -4.6, -4.4, -4.2, -4.0, -3.8, -3.6, -3.4, -3.2, -3.0, -2.8, -2.6, -2.4, -2.2, -2.0, -1.8, -1.6, -1.4, -1.2, -  
1.0, -0.8, -0.6, -0.4, -0.2, 0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5,  
9.0, 9.5, 10.0  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Dither  
Dithering algorithm is implemented using the POW-R set of algorithms. Graph shows the three algorithms  
at 44.1kHz and 88.2kHz sampling rates each.  
Graph 9: Output spectrum with 80dBFS / 1kHz sine wave, dithered to 16 Bits, using the three POW-R algorithms at 44.1kHz and  
88.2kHz respectively  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Remote Control Protocol  
MIDI Implementation  
Parameter Remote Control  
All band parameters plus the controls parameters are remote controllable. Each parameter has its corre-  
sponding MIDI controller number.  
According to the different parameters, the controllers are limited in their range. Invalid values are replaced  
by the maximum allowable values.  
Following is a list of the supported MIDI system inclusive commands:  
Action  
MIDI Message Status Byte Data Byte(s)  
Comment  
Restore Snapshot  
Program Change  
1100 cccc  
0ppp pppp  
(cccc) Channel No.  
0 - 127  
(ppppppp) New Prog No:  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 127  
Adjust Boost/Cut  
CH1 Band 1  
Control Change  
1011 cccc  
00000000 ($00)  
0vvv vvvv  
Adjust Q  
CH1 Band 1  
Control Change  
Control Change  
Control Change  
Control Change  
1011 cccc  
1011 cccc  
1011 cccc  
1011 cccc  
00000001 ($01)  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 127  
Adjust Frequency  
CH1 Band 1  
00000010 ($02)  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 127  
Adjust Slope  
CH1 Band 1  
00000011 ($03)  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 2  
Adjust Band Mode  
CH1 Band 1  
00000100 ($04)  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 9  
CH1 Band 2  
CH1 Band 3  
CH1 Band 4  
CH1 Band 5  
CH1 Band 6  
CH1 Band 7  
CH2 Band 1  
CH2 Band 2  
CH2 Band 3  
CH2 Band 4  
CH2 Band 5  
CH2 Band 6  
CH2 Band 7  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
Control Change  
...  
...  
...  
...  
...  
...  
...  
...  
...  
...  
...  
...  
...  
$05 - $09  
$0A - $0E  
$0F - $13  
$14 - $18  
$19 - $1D  
$1E - $22  
$23 - $27  
$28 - $2C  
$2D - $31  
$32 - $36  
$37 - $3B  
$3C - $40  
$41 - $45  
Overall Gain CH1  
Control Change  
1011 cccc  
$46  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 127  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Overall Gain CH2  
Thresholds CH1  
Thresholds CH2  
MSC Mode  
Control Change  
Control Change  
Control Change  
Control Change  
1011 cccc  
1011 cccc  
1011 cccc  
1011 cccc  
$47  
(cccc) Channel No.  
0vvv vvvv  
(vvvvvvv) New Value:  
0 - 127  
$48..$4B  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 127  
$4C..$4F  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0 - 127  
$50  
(cccc) Channel No.  
0vvv vvvv  
(vvvvvvv) New Value:  
Bit 0: on/off, 1= on  
Bit 1: Input: 1= MSC, 0= L/R  
Bit 2: EQ:  
1= MSC, 0= L/R  
Bit 3: Output: 1= MSC, 0= L/R  
Bit 4: 1 = CH swap, 0= norm  
(cccc) Channel No.  
CH1 / 2 SELECT  
Set Ganged Mode  
Toggle A < > B  
EQ Bypass  
Control Change  
Control Change  
Control Change  
Control Change  
1011 cccc  
1011 cccc  
1011 cccc  
1011 cccc  
1111 1111  
$51  
0vvv vvvv  
(vvvvvvv) New Value:  
0, 1  
$52  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0, 1  
$53  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0, 1  
$54  
0vvv vvvv  
(cccc) Channel No.  
(vvvvvvv) New Value:  
0, 1  
System Reset  
-
Recall Snapshot 0 to WS A  
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
Dump Remote Control  
All System-Exklusive commands consist of a header, a message type, possible data and the EOS (end of  
system exclusive). Below is the format of the header:  
Byte  
Value  
Description  
Section  
1
2
3
4
5
6
F0  
Sysex  
Header  
00  
Manufacturer's ID  
30  
Manufacturer's ID  
5A  
Manufacturer's ID  
07  
Model ID: 6 = Gambit EQ DYN  
Device ID: -> Midi channel number  
0000nnnn  
Following is a list of the supported MIDI system exclusive commands (without header):  
Snapshot format for dump. A complete dump consists of 128 snapshots:  
Byte  
Value  
Description  
Section  
1-6  
...  
...  
Header  
7
00000001  
0nnnnnnn  
0nnnnnnn  
0nnnnnnn  
message = Snapshot dump  
Package number ( 0..7F)  
scale set number  
Message Type  
Data  
8
9
10 - 265  
256 Bytes of Snapshot data  
266  
267  
0ccccccc  
F7  
Checksum without byte one (F0 Sysex Command)  
EOS  
Checksum  
EOS  
Dump request:  
Byte  
Value  
Description  
Section  
1-6  
7
...  
...  
Header  
00000010  
F7  
message = dump request  
EOS  
Message Type  
EOS  
8
Version request:  
Byte  
Value  
Description  
Section  
1-6  
7
...  
...  
Header  
00000011  
F7  
message = version request  
EOS  
Message Type  
EOS  
8
Version send:  
Byte  
Value  
Description  
Section  
1-6  
7
...  
...  
Header  
00000100  
0vvvvvvv  
0vvvvvvv  
message = send version  
OS Version  
DSP Version  
Message Type 4  
data  
8
9
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
10  
11  
12  
0vvvvvvv  
0vvvvvvv  
F7  
Scale Version  
Coeff. Version  
EOS  
EOS  
Workspace and Settings request:  
Byte  
Value  
Description  
Section  
1-6  
7
...  
...  
Header  
00000110  
F7  
message = send all parameters as single controler messages  
EOS  
Message Type  
EOS  
8
Programming Mode:  
NB: This command triggers the programming mode in th e EQ1. In this mode operation from the  
front panel is impossible!  
Byte  
Value  
Description  
Section  
1-6  
7
...  
...  
Header  
00000101  
F7  
message = enter programming mode  
EOS  
Message Type  
EOS  
8
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OPERATING INSTRUCTIONS FOR GAMBIT EQUALIZER EQ1-DYN  
TECHNICAL DATA  
RS-232  
The implementation is equal to MIDI.  
Connector Type:  
D-SUB female, 9 pin, Pinout:  
pin 1: n.c.  
pin 2: RS232 output  
pin 3: RS232 input  
pin 4: connected to pins 6, 8  
pin 5: ground  
pin 6: connected to pins 4, 8  
pin 7: n.c.  
pin 8: connected to pins 4, 6  
pin 9: n.c.  
RS-422  
The implementation is equal to MIDI.  
Connector Type: D-SUB female, 9 pin, Pinout:  
pin 1: remote input +  
pin 2: remote output +  
pin 3: n.c.  
pin 4: ground  
pin 5: ground  
pin 6: remote input -  
pin 7: remote output -  
pin 8: ground  
pin 9: ground  
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